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Finding the Fourth Proportional to 564,804.80, 847,207.20 and 486,072.80

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Solution

The fourth proportional to 564,804.80, 847,207.20 and 486,072.80 is: 729,109.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    564,804.80 : 847,207.20 = 486,072.80 : x
  2. Step 2: Convert to fraction form
    564,804.80/847,207.20 = 486,072.80/x
  3. Step 3: Cross multiply
    564,804.80x = 847,207.20 × 486,072.80
  4. Step 4: Simplify right side
    564,804.80x = 411,804,375,884.16
  5. Step 5: Solve for x
    x = 411,804,375,884.16/564,804.80
  6. Step 6: Final answer
    x = 729,109.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.